Photographic-film-printing apparatus



E. w. NELSON. PHoToGRAPHlc HLM PmNnNG APPARATUS.

APPLICATION FILED MAY22`1920. y 1,399,396. Patented Dec. 6, 1921.

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gl lmllll` A i ANUMAN" E.' W. NELSON.

PHOIOGRAPHIC FILM PRINTING APPARATUS.

APPLICATION HLED MAY22. 1920.

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, 1,399,396;v p y y 4 1j fappnguon med may 22, 1920. serial No. 383,387.

-ratus for this production to with Ithe invention the several parts of the side or the other into position iuNrrED j -sTArESLPATENr OFFICE.

. l wglvnrsomor NEWYROCHELLE, NEW YORK.

p. l. f 'A rnoroeaAPHie-rnim-rnmme APPARATUS.

To all 'whom imag concern: f

Be it known'f that I, ERIK W.1NELsoN, a citizen of the United States, residing in the `cty of New Rochelle, in the State of New York, have inventedc'rtain new and useful ing .Apparatusof which 'the following is a speclficatiomreference being had to the acplompanyng drawings,` forming' aY part l0 ereof. y

ThisA invention relates to apparatusv for use in printing, either with the same s'ize or with enlargement or with reduction, one moving picture film from another, either positive or negative. This operation is necessarily carried `on in a' room only dimlv lighted Iby ruby light and vunderthe constant an operator, who is required supervision of frequently to manipulate one film carrier or the other. Usually the several parts of the apparatus are fixed to a bench or table yand the operator is 4required 'to move from one end of theapparatusto the other and sometimes to bend at some part on the remote side. It is the object of this invention to provide an appageneral purpose which shall work and thereby enable the be increased. In accordance facilitate the apparatus are mounted upon a head which issupportedon a base so as to be capable` Y of-rotation `about a `vertical axis, so that the operator, standing .orsitting at one side, can readily rotate the head to bring one for convenient manipulation. The apparatus, moreover, is ,so constructed as to permit one of vthe film carriers to be adjusted readily with respect to the other, in order that the print may be enlargedor reduced as desired, and provision is also made for the convenient adjustment of the lens systemf The invention will be more fully explained hereinafter with reference to the accompanying drawings in which it is illustrated, and in 'which Figure 1 is a improved apparatus.

Fig. 2 is a. view in section on the plane indicated by the broken line 2 2 of Fig.v 1, looking down.

Fig. 3 is atop View. Fig. 4 is a detail view of the lens adjusting means.

In the embodiment of the invention illus- Spe'x'zificaton of Letters Patent.

I provements in Photographic-Film-Prinb;

over. the apparatus in order to get. i

film carrier f,

view in elevation of the' xg is mounted, with Patented Dec. 6, 1921.

trated in the drawing a suitable base a, ada 'ted to rest upon the fioor, receives rotata ly and with a suitable bearing, as at b, a stem or standard c, of suitable height, which forms a part of or has secured to its upper end a supporting head d by which thefilm carriers, the lens system, and the source of light are supported. A suitable motor e, secured to the stem or standard c,

drives through suitable pulleys and bands- .usual or suitable construction as to the film feeding devices and described in detail.

need not'be shown or The relatively fixed of the apparatus illustrated in the drawing, feed drum f2, an upper feed drum fsmand atake-up reel f4, nances, the lower feed drum f2 being driven from the motor e through the pulley 4e, while the upper feed drum f3 is drlven from the lower feed drum f2 by a vertical shaft f5, with suitable'intermeshing bevel gears. The other, movable film carrier g may be constructed in like manner, its upper feed drum g being driven from the upper feed drum f3 of the film carrier f through a telescoping shaft g2 and suitable intermeshing bevel gears and the lower feeddrum gs being driven from the upper feed drum g through a vertical shaft g4, and suitable intermeshing bevel gears. By such means the 'film carrier g is driven in synchronism with the'film carrier f while the extensible, telescoping shaft g2 permits the position of the movable film carrier g to be changed as desired.

The frame'of the relatively fixed film carrier f is applied directly to or forms a art of the supporting headl d, while `the Frame of the relatively movable film carrier suitable bearings g5, on horizontal rods d head d, so that the film carrier carrier f has a supply reel f', a lower which are fixed lin the with the usual appurtefor the purpose of regulating the size of the I is mounted on the rods d', the tubular container being connected with the respective.

film carriers by the light-excluding bellows sections d2. The frame h of the lens system has a threaded engagement with a screw h2 which at one end is held rotatably but against longitudinal movement in the head d and has at its other end a milled head h3 by 4which the screw can be manipulated, the

screw having a smooth bearing in the movable carrier g. By this means ythe lens system can be adjusted readily for'purposes of focusing. l p

The source of light, indicated at i, is supported by the head ai with the usual primary lens lc being external to the twoA film carriers, that is, at one side of both, so that the rays of light shall pass through one film and fall upon the other.

It-will be seen thatthe entire apparatus is constructed so as to hold the source of light, the lenses andthe film carriers rigidly in line, while permitting easy movement of one of the film carriers 'with respect to the 'other and providing for synchronous operav tion of both films and for convenient adjustment of the intermediate lens system.

I claim as my invention: 1. A photographie film printing apparatus comprising a base, a supporting head mounted thereonand rotatable about a Vertical axis, a horizontal bar extended :from the' head, a film' carrier mounted on the head, a second film carrier mounted movably on said bar, a lens system vsupported by the head between the two film carriers and a` source of light supported by the head external to *f y the two lm carriers. l 1

2. A photographic film printing apparatus comprising a base, a supporting head mounted thereon and rotatable about a vertical axis, a horizontal vbar extended from .the head, a film carrier mounted on the head, a second film. carrier mounted movably on said bar, a' lens system supported by the i 3. A photographic film printing apparatus' comprising a supporting head', a film carrier supported by the head in relatively fixed position, a second film carrier supported byA the head and movable toward and from the first carrier, a lens system and carrier therefor supported by the head and adjustable between the two film carriers,and an adjusting screw held at one end in said headrotatably but against endwise movement and having a smooth bearing in the second film carrier and having a threaded engagement with the lens carrier. 1 f y This specification signed .this 21st day of Maya. D. 1920.

ERIK w. NELSON.V 

